BULLETIN OF THE LEBEDEV PHYISICS INSTITUTE
P.N.Lebedev Physics Institute of the Russian Academy of sciences

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1. Title:
MULTIPOLE DESCRIPTION OF THE MAGNETIC FIELD PRODUCED BY A HIGHLY SYMMETRIC Fe30 MOLECULE
Authors:
A.S. Mishchenko, A.S. Chernyshov, A.K. Zvezdin.



Abstract:


2. Title:
EXPERIMENTAL DETERMINATION OF THE MODULATION DEPTH OF A LUMINOUS FLUX IN THE A-MODULATION METHOD
Authors:
A.M. Gerasimov, A.I. Golovashkin, O.M. Ivanenko, A.P. Korotkov.



Abstract:


3. Title:
THE MONITORING OF AIR COMPOSITION ABOVE EXTENDED CONTAMINATION SOURCES
Authors:
V.V. Ivanov, B.V. Dementev, S.A. Reshetnyak, L.A. Shelepin, V.A. Shceglov.



Abstract:


4. Title:
THE MECHANISM OF STREAMER PROPAGATION TO ANODE AND CATHODE
Authors:
S.I. Yakovlenko.



Abstract:
We propose a new mechanism of ionization propagation in a dense gas associated with multiplication of background electrons in an inhomogeneous electric field. This mechanism does not depend on the sign of the field projection onto the ionization propagation direction. The motion of the streamer depends on the electric field concentration on its head. An analytical expression for the ionization front velocity is derived on the basis of a simple equation allowing for background electron multiplication. This expression agrees well with numerical calculations made in the framework of both the simple model of background electron multiplication and the detailed diffusion-drift model. In particular, within the diffusion-drift model we demonstrate the ionization front motion, due to background electron multiplication, from an anode of small radius to a cathode.


5. Title:
POLARIZATION OF He-LIKE ARGON ION EMISSION LINE EXCITED BY AN ELECTRON BEAM
Authors:
F.F. Goryaev, J.. Dubau, A.M. Urnov.



Abstract: